Quotation and metrology

This course provides the basic tools needed for the functional dimensioning of mechanical systems. After presenting one-dimensional dimensioning and its limitations, 3D geometric tolerancing (GPS), in accordance with ISO standards, is introduced in order to learn how to read and then write a geometric tolerance according to the functional requirements of a part in a mechanical system. The study of the hyperstaticity of the mechanism and connections then makes it possible to establish the functional conditions required to ensure the assembly and proper functioning of the system. Dimensional and geometric tolerances are then determined by setting up and resolving dimension chains. Finally, once the parts have been manufactured, it is necessary to perform metrological checks and verify their conformity with the functional dimensions.

• Understanding the origin of the need for quotation in relation to the problems of hyperstaticity in mechanical systems.
• Know how to read and write dimensional or geometric specifications according to ISO standards (3D dimensioning).
• Understand the consequences of the rating,
• Know how to establish and determine tolerance intervals for the functional dimensioning of a part using dimension chains (one-dimensional).
• Know the basics of metrological control of a part,
• Knowing how to check a geometric specification using a Coordinate Measuring Machine.

• Manufacturing processes,
• Technical communication, CAD,
• Hyperstaticity of mechanical systems

Recommended prerequisites:

• Basic concepts of metrology

CC + TP